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Recent content by rostanlin

  1. rostanlin

    air fuel ratio

    Temperature is directly proportional to the pressure increase. I operate same engines series with slightly different compression ratios and exhaust temperature are different as well.
  2. rostanlin

    air fuel ratio

    greetings, Another fact affects the exhaust temperature, the engine compression ratio. Diesel engines has higher compression ratio (14:1 to 23:1) meanwhile gasoline/gas engines compression ratio are lower than 11,5:1.
  3. rostanlin

    Compressor process high outlet temperature.

    Ok, what compressor do you have? If you want to know what temperature should be at the outlet temperature to compare with your actually outlet temperature, try to simulate using a compressor performance software like Ariel performance (Ariel Compressor), D-R Size (Dresser-Rand), Compass...
  4. rostanlin

    Knock resistance rating for Natural Gas

    We have on a same Gas compressor plant more than 20 gas engine(Waukesha and Caterpillar and gas Engine and Solar Turbines) and the gas fuel source change frecuently, so it is important to update the ignition timing and that is why I want to use a single spreasheet to calculate Methane Number and...
  5. rostanlin

    Different spark plugs on the same engine problems

    Greetings,I need to know what problems can cause the use of different spark plugs on a same Gas Engine. Eg. I have seen the use of Champion RM77N and Champion D14N at the same time on a Waukesha L7042GSI with Altronic III ignition system. I would like to know the consequences of this practice...
  6. rostanlin

    Knock resistance rating for Natural Gas

    I need the ecuations, i mean, the calculation procedure. I already have the WKI and Gas Engine Rating Pro (GERP), but I need to do a spreadsheet comparing all of these methods for knock resistance rating for natural gases
  7. rostanlin

    Knock resistance rating for Natural Gas

    Greetings, I am looking for the procedures to calculate the knock resistance rating for natural gases, required for Gas Engines °BTDC adjusting . Specifically, I need the calculation procedures for WKI (Waukesha Knock Index for Waukesha Gas Engines), Methane Number (Caterpillar Gas Engines) and...
  8. rostanlin

    Compressor process high outlet temperature.

    Greetings, I am not clear about the question, are you talking about °F or C°? multi-stages? is there any downstream process? lubricated or non-lubricated application? Branch? Compressor model? I recommend to you to check it out the specification on the operation and maintenance manual to know...
  9. rostanlin

    Compressor Frame Comparison

    Hi, You can check Ariel compressor frames specifications on https://www.arielcorp.com/ariel_products.aspx?id=504 Acording to that, the most similar to the Dresser-Rand HHE-VG compressor frame are JGB/JGV Ariel frames. By the way, exactly what is the problem with the software? ...do you know...
  10. rostanlin

    Rod Load Question

    Hi KernOily, Rod load is applicable for every throw using a piston rod... commonly, the maximun allowed rod load is the same for every rod in a throw for a compressor model(frame), even though, some frames could have rod models with different maximun allowed rod load. You must be concern about...
  11. rostanlin

    Liquid effects in a gas engine fuel

    There are two reason the cylinder is so rusty. First, the picture was taken 10 days after the failure and the cylinder has been exposed to a humid and rainy enviroment. Second, the engine jacket water is cooled by non-treated water. The scrarching are in both side of the piston and cylinder...
  12. rostanlin

    Liquid effects in a gas engine fuel

    Link Top Cylinder View Link Outside Cylinder View Link Internal Cylinder View Link Top Piston View Thanks, for all your opinions and ideas, Please feel free to view some pics of the piston/cylinder failure, as you can see, during the fail the cylinder lost the end of the cylinder. Besides...
  13. rostanlin

    Liquid effects in a gas engine fuel

    Thanks, It known that Caterpillar uses the methane number, LVH and specific gravity of the gas fuel as as a reference to calculate timing and AFR. But I am wondering what hydrocarbon liquids can cause in a specific moments (for example: a fuel gas scrubber does not work as it should or due to...
  14. rostanlin

    Liquid effects in a gas engine fuel

    I'm part of a Cause Root Analisys of a Piston/Cylider failure in a gas engine caterpillar G3600. I would like to know how liquids within the gas fuel (drops or mist) affects the combustion and engine components in a gas engine. How I know that a mechanical failure (piston, cylinder, cylinder...
  15. rostanlin

    How can avoid bold cracking or snapping off in a reciprocating cylinder compressor?

    Hi, this is my first time in this forum, feel free to correct me if I made a mistake. We have a 3stages /6throws (two cylinder per stage) reciprocanting compressor (Superior WH-66/Caterpillar G3616)that frecuently breackes or loosen bolts between cylinder compressors and distance pieces in...
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